linux-kernel - Re: sysfs lockdep complaint

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Message-ID: <2375c9f91002200126x22b262b3r8b9b58e3cee34077@mail.gmail.com>
Date:	Sat, 20 Feb 2010 17:26:15 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: sysfs lockdep complaint

On Thu, Feb 18, 2010 at 5:32 PM, Johannes Berg
<johannes@...solutions.net> wrote:
> Get this when powernowd starts on my G5:
>
> [   30.490674] =============================================
> [   30.490708] [ INFO: possible recursive locking detected ]
> [   30.490727] 2.6.33-rc8-wl-64012-g6917413 #160
> [   30.490744] ---------------------------------------------
> [   30.490763] powernowd/2577 is trying to acquire lock:
> [   30.490782]  (s_active){++++.+}, at: [<c0000000001efa94>] .sysfs_addrm_finish+0x58/0xc0
> [   30.490831]
> [   30.490833] but task is already holding lock:
> [   30.490854]  (s_active){++++.+}, at: [<c0000000001eff80>] .sysfs_get_active_two+0x3c/0x84
> [   30.490895]

This should be fixed by the patchset from Eric:

http://lkml.org/lkml/2010/2/11/334
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